<< I heard of and read plenty of papers that have found that
 breastfeeding reduces breast cancer. Does anyone know of the studies that
 find no effect of breastfeeding on breast cancer?  >>

Prompted by our recent discussions, I did a PubMed search and found 8 matches
for "breastfeeding AND breast cancer AND risk reduction."

All of them reported that their long-term bf'er (and in a few cases also
short termers) had reductions in their ca rates.

However, I found NOT ONE able to make a statistically significant assertion,
basically just because there were so darn few long term breastfeeders in
their samples! Sadly, a random-control group of American women is not going
to have a lot of folks in it who bf more than two years over their lifetime.
  And the studies that were from other countries -- one was in India, I
believe, and one was in Southern California but of Asian-immigrant mothers --
found weaker correlations.   What to make of this is hard to say -- I kind of
wish someone out there would compile those numbers, if they measured in ways
that could be compared, to make a statistically significant total group out
of them.

Several folks have responded to my recent question on the list by quoting to
me from The Learning Curve's brochure (I think?) that says that 2 years
lifetime bf cuts risk in half, and that more than 7 years essentially
eliminates it altogether.   But so far (without having yet called TLC) I have
not come across the source for these numbers, so I don't know how many moms
they are based on.

If some of you know studies like this that make stronger assertions that the
ones PubMed found me, I'd be grateful if you would post refs to the list.

Thanks!

Elisheva

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